feat: Added GIT_SSH support for bundle install

When installing an app, there might be failures during the deploy when trying to bundle. This
happens, when private repositories are included in a Gemfile. To resolve this issue, if SCM::Git
driver is used, the GIT_SSH env variable is also passed to bundle install phase.

Resolves #37

libraries/helpers.rb

@@ -58,11 +58,12 @@ def every_enabled_rds
   end
 end
 
-def perform_bundle_install(shared_path)
+def perform_bundle_install(shared_path, envs = {})
   bundle_path = "#{shared_path}/vendor/bundle"
 
   execute 'bundle_install' do
     command "/usr/local/bin/bundle install --deployment --without development test --path #{bundle_path}"
+    environment envs
     cwd release_path
   end
 end

recipes/deploy.rb

@@ -17,6 +17,7 @@
   appserver = Drivers::Appserver::Factory.build(application, node)
   worker = Drivers::Worker::Factory.build(application, node)
   webserver = Drivers::Webserver::Factory.build(application, node)
+  bundle_env = scm.class.adapter.to_s == 'Chef::Provider::Git' ? { 'GIT_SSH' => scm.out[:ssh_wrapper] } : {}
 
   fire_hook(:before_deploy, context: self, items: databases + [scm, framework, appserver, worker, webserver])
 
@@ -52,7 +53,7 @@
     migration_command(framework.out[:migration_command])
     migrate framework.out[:migrate]
     before_migrate do
-      perform_bundle_install(shared_path)
+      perform_bundle_install(shared_path, bundle_env)
 
       fire_hook(:deploy_before_migrate, context: self,
                                         items: databases + [scm, framework, appserver, worker, webserver])
@@ -61,7 +62,7 @@
     end
 
     before_symlink do
-      perform_bundle_install(shared_path) unless framework.out[:migrate]
+      perform_bundle_install(shared_path, bundle_env) unless framework.out[:migrate]
 
       fire_hook(:deploy_before_symlink, context: self,
                                         items: databases + [scm, framework, appserver, worker, webserver])